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C. B. GARRETT.

AUTOMATIC SPRINKLER HEAD.

APPLICATION FILED 1,111.27, 1913.

Patnted Aug. 22, 1916.

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AUTOMATIC SPRINKLER HEAD.

APPLICATION FILED IAN. 27,1913.

Patented Aug. 22, 1916.

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i TED STATES PATENT @FFI@E.

CHARLES E. GARRETT, F CINCINNATI, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO GLOBE AUTOMATIC SPRINKLER COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

AUTOMATIC SPRINKLER-HEAD.

Specification of Letters Patent.

Patented Aug. 22, 1916.

Application filed January 27, 1913. Serial No. 744,453.

Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Automatic I Sprinkler-Heads; and I do h'erebydeclare the following to be a full, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use the same.

My present invention has for its object to provide an improved sprinkler head for use in connection with automatic fire extinguishing systems, and is especially designed as an improvement on the form of sprinkler head, disclosed and claimed in my prior Patent No. 1,013,545, granted of date January 2nd, 1912, and entitled Automatic sprinkler head.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view in front elevation showing the improved sprinkler head; Fig. 2 is a vertical section taken on the line :0 m on Fig. 1; Fig. 3 is a horizontal section taken on the line m m on Fig. 2; Fig. 4: is a horizontal section taken on the line :0 m on Fig. 2; Fig. 5 is a front elevation of the front release piece of the link; Fig. 6 is an edge elevation of the parts shown in Fig. 5; Fig. 7 is a rear elevation of the back release piece of the link; Figs. 8 and 9 are views, respectively, in edge elevation and plan of the part detailed in Fig. 7 Fig. 10 is aside elevation of the lever, some parts being sec tioned; Fig. 11 is a front elevation of the said lever; Fig. 12 is a front elevation of the strut; Fig. 13 is an edge elevation of the said strut; Fig. 14: is a plan view of a socalled cap; Fig. 15 is an edge elevation of the said cap, some parts being sectioned; Fig. 16 is a plan view of the so-called compression block; Fig. 17 is a section taken on the line 00" as on Fig. 16; Fig. 18 is a view in elevation showing the link and lever assembled, some parts being broken away; and Fig. 19 is a vertical section taken on the line x w on Fig. 18.

In the drawings, the numeral 1 indicates a nozzle which is adapted to be secured in the usual way to the pipe fittings of the fire extinguisher installation. The upper end of this, nozzle l-terminates in a raised annular cap seat or flange 2, and is further provided with a yoke or arch 3 that supports a hub 4 at its upper portion; an abutment screw 5 is screwed axially through the hub 41 and projects below the same. A spraying head or distributer 6 is secured to the upper portion of the hub 4 and projects beyond the same.

The orifice or water discharge passage of the cap seat 2 is normally closed by a cap 7, preferably of bronze, and between which and the said seat a thin copper gasket 8 is interposed. The cap 7 is formed with a rectangular hub 9 that engages a rectangular seat of the so-called compression block 10. This compression block 10 is preferably made of soft copper and, on its upper face, it is formed with a diametrically extended groove 11 that affords a seat for the lower end of the strut, presently to be described. The said parts 7, 8 and 10 are held together and the gasket 8 is tightly pressed onto the sharp upper edge of the cap seat 2 by a toggle acting strut structure of novel construction. This strut structure in some of its features closely resembles that of my said prior application, above identified, but it has the following important differentiating feature, to-wit, in the said prior patent the lever has a detachable section soldered thereto, and the lock wires were applied directly between the strut and this detachable lever section. In the present improved construction, no part is directly soldered to the lever proper; and, in lieu of the detachable section soldered to the lever, I employ a link made up of two parts of so-called release pieces united by a fusible solder. One of these release pieces is interlocked to the lever, and the other is connected to the strut by a wire lock device. Referring now to the details of this link, the numeral 20 indicates the so-called front release piece, and the numeral 21 the so-called back release piece of the said link. The front piece 20, at its lower edge, is provided with a concave flange or portion 22; at its sides, it is provided with back turned lips 23, and, at its central portion, it is provided with a bulged stop lug 24, which latter is provided for convenience in assembling. The back piece 21, at its upper edge, is formed with a rearwardly turned flange 25 having a long transverse slot 26 through which the lever, presently to be noted, is adapted to be inserted. At its lower edge, said member 21 is provided with a backwardly bent lip 27 and, at its sides, it is provided with backwardly bent lips 28. When the two members 20 and 21 are assembled, solder 1], shown as exaggerated in thickness in Fig. 19, is interposed between the said. members and rigidly unites the same and, at such times, the said lips 23 of the members 20 embrace the said lips 28 of the member 21, enabling them to register properly.

The present toggle acting strut, like the toggle acting strut of the prior patent, includes a lever 29 and a compression member 30. The compression member 30, at its lower end, is seated in the groove 11 of the compression block 10, and it is preferably stiffened by a longitudinal corrugation 30*; and, at its upper end, is formed with spring prongs 30 that are bent laterally away from its intermediate upper end portion 30. The said end 30 and the ends of the spring prongs 30 engage a slightly curved seat formed in the bend of the lever '29, which lever, at its short upper end, projects beyond the upper end of said compression member and is provided with a depression 29 in which the lower end of the abutment screw 5 is seated. The lower portion ofthis lever 29 is engaged through the slot 26 in the upper end of the back member 25 of the fusible link. This engagement is made by passing the upper end of the said lever upward through the said slot 26. At its sides, said lever is provided with stopsor projections 31 that engage the upper end flange 25 of the member 21, as best shown in Fig. 19. At its extreme lower end, the lever 29 is formed with a notch 32 that embraces the lip 27 of the said back release piece 21.

The strut lock of the present device, like that of the above identified patent, is made up of a wire yoke 33 having eyes 34- at the ends of its prongs, and a lock rod 35 having crooked orlaterally bent ends. When thelock piece is applied, the yoke 33 embraces the lower portion of the strut compression member 30, and is seated in the edge notches 3O thereof, while therod 35 is passed through the eyes 3% of the said yoke and is seated in the curved or concave lower end of the front release piece 20.

lVith this improved strut arrangement,

the lever may have the desired flexibility without causing the resilient movement.

thereof to loosen or start the peeling of the solder joint. In fact, the soldered joint is removed entirely from the lever, and the two members of the so-called fusible link may be provided with solid engaging surfaces extended to any desired extent. Also the application of a solder to the members of the fusible link is, of course, accomplished without heating the lever and, hence, without removing the spring temper thereof. The link is flexibly interlocked to the lever so that both the lever and the link are relieved from torsional strains. 7

lVhat I claim is 1. A toggle acting strut for automatic' sprinklers, comprising a compression member, a lever fulcrumed on said compression member, a two-partlink having its sections united by fusible solder, one of the sections thereof being interlocked to said lever,and

a strut lock connecting said compression member to the other member of said linkl V 2. A toggle acting strut for automatic sprinklers, comprising a'compressron member, a lever fulcrumed on said compression member,a two-part link having its sections united by fusible solder, one of the sections said cap, a lever fulcrumed on saidcompression member and seated against said abutment, a two-part hnk having its sections united by fusible solder, one-sect on thereof being interlocked to said lever, and

a lock connecting the other section of said link to said compression member. 4. In an automatic sprinkler, the. combination with a cap normally closing the discharge. orifice thereof and an abutment overlying said cap, of a toggle acting strut comprising a compressionmember pressing'on said cap, a lever fulcrunied on said compression member and seated against said abutment, a two-partlink h'avingits sections united by fusible solder, one section thereof being interlockedfto said lever, and a lock connecting the other section of said link to said compresslon member, the interlock ng connection between said link and lever be- 7 ing flexibleso as to relieve said lever of torslonal stra1ns. V r

5, In an automatic sprinkler, a collapslble toggle acting strut comprising a compression member, a lever fulcrumed on said compression member, a two-part link havingfits sections united by fusible solder, one section of-said link havinga slotted flange through which the said lever is passed, the lower end of the said lever bearing against the'fsaid section, and aflock connecting the other section of said link to. said compression 7 member.

terlapping side lips, and the said lever having lugs on its sides limiting its movement through the slotted end of the engaged section of said link.

In testimony whereof I affix my signature in presence of tWo Witnesses.

CHARLES B. GARRETT.

Witnesses:

BERNICE G. WHEELER, HARRY D. KILGORE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

